[libc-commits] [clang] [compiler-rt] [libc] [llvm] [PGO][AMDGPU] Add offload profiling with uniformity-aware optimization (PR #177665)

[Joseph Huber via libc-commits]

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@@ -212,5 +211,12 @@ int __llvm_write_binary_ids(ProfDataWriter *Writer);
 int lprofWriteOneBinaryId(ProfDataWriter *Writer, uint64_t BinaryIdLen,
                           const uint8_t *BinaryIdData,
                           uint64_t BinaryIdPadding);
+#ifdef __cplusplus
+extern "C" {
+#endif
+COMPILER_RT_VISIBILITY int __llvm_profile_hip_collect_device_data(void);
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jhuber6 wrote:

I'm curious why only this function needs extern "C" and visibility. Do we not expose other ones like __llvm_write_binary_ids in the same way?

https://github.com/llvm/llvm-project/pull/177665